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devlian [24]
2 years ago
9

Having some trouble with this...pls help (in fraction form)

Mathematics
1 answer:
Yuri [45]2 years ago
4 0

Answer:

\frac{17}{6} or 2\frac{5}{6}

Step-by-step explanation:

1.Find the Least Common Denominator (LCD)

 LCD = 6

2.Make the denominators the same as the LCD.

   2+\frac{1*3}{2*3}  + \frac{1*2}{3*2}

3.Simplify. Denominators are now the same

   2+\frac{3}{6} + \frac{2}{6}

4. Join the denominators

   2+\frac{3+2}{6}

5.Simplify

   2\frac{5}{6} = \frac{17}{6}

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There are 5 pens in a container on your desk. Among them, 3 will write well but 2 have defective ink cartridges. You will select
Norma-Jean [14]

Answer:

Kindly check explanation

Step-by-step explanation:

Total Number of pens = 5

Number of defective pens = 2

Number of non-defective pens = 3

A.) number of defective pens selected :

X : {0, 1, 2}

It is possible that no defective pen will be selected ; 1 defective will be chosen or both pens are defective.

2.)

Defective as Success (since selecting a defective pen is the point of interest.

3.)

Since selection is done without replacement

Probability of success per selection is different for each selection ;

Number of defective = 2

Number of observations = 5

P(success on first selection) = 2/5

P(success on second selection) = 1/4

Hence, X is not well approximated by a binomial random variable.

4.) if selection is done with replacement ; then then the probability of success per selection will be the Same for each selection made. Hence, X will be well approximated by a binomial Random variable.

5.) If sampling is done without replacement, then the the hypergeometric function will be a more effective approximation.

7 0
2 years ago
How would you read this inequality? Answer in a sentence. x<21
Lubov Fominskaja [6]

Answer:

x is less than twenty one

5 0
2 years ago
A person is to install five devices each 6 7/8 inches wide with 3 1/2 inches between switches. how much space will be needed to
solong [7]
Refer to the diagram shown below.

w = 6 7/8 in = 6.875 in, the width of each device.
d = 3 1/2 in = 3.50 in, the space between teo devices.

The total space needed is
D = 4(w+d) + w
    = 5w + 4d
    = 5*6875 + 4*3.5 
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Answer:  48 3/8 inches or 48.375 inches

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3 years ago
Approximately how much water does the average american use every day?
Sphinxa [80]

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4 0
2 years ago
I dont know how to do these questions I would be pleased if someone helped thankyou.
sleet_krkn [62]

Area = area of the square in the center + 2 * area of the 2 quarter circles.

= 5^2 + 2 * 1/4 *3.14 *  5^2

= 25 + 39.25

= 64.3 in^2    answer

5 0
3 years ago
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